All-on-4 Dental Implants — what you should know in 2026
How a full arch of fixed teeth is supported on four implants, what it costs, who it suits and how recovery actually unfolds.
Written by our medical board, reviewed quarterlyUpdated 21 January 19709 min read
Who All-on-4 is for
All-on-4 is a full-arch solution for people who have lost most or all of the teeth in an upper or lower jaw, or whose remaining teeth are failing. Instead of one implant per tooth, the entire arch of fixed teeth is carried on just four implants, two placed vertically at the front and two angled at the back to make the most of available bone. The result is a fixed bridge that does not come out like a denture.
Patients choose it because it is life-changing for those struggling with loose dentures or extensive decay, and because it is far more affordable than replacing every tooth with its own implant. The angled rear implants often avoid the need for bone grafting or a sinus lift, which keeps the case simpler and faster.
Good candidates have enough bone at the front of the jaw to anchor the angled implants and are committed to the hygiene a fixed bridge requires. Those with very severe bone loss may need All-on-6 or a grafting plan instead.
How All-on-4 differs from the alternatives
The defining idea of All-on-4 is angulation: tilting the back implants lets them engage denser bone and span the arch with only four fixtures, which is why grafting can often be avoided. All-on-6 adds two more implants for greater support and is generally preferred where bone allows or for the upper jaw, which is softer. Conventional implant-supported dentures, by contrast, clip onto implants and are removable for cleaning.
All-on-4 usually permits immediate loading: a fixed temporary bridge is fitted within a day or two of surgery, so you rarely leave without teeth. The definitive bridge, in acrylic, composite or zirconia, follows months later once the implants have integrated.
The trade-off is that four implants leave less margin if one fails, and the technique demands accurate planning. It is an excellent solution in the right mouth, but it is not automatically superior to All-on-6; the choice depends on your bone and jaw.
What is included and what it costs
All-on-4 is quoted per arch, and the price spans a wide range depending on the implant brand and, above all, the material of the final bridge. A provisional acrylic bridge is cheaper; a definitive zirconia bridge costs more but is stronger and more aesthetic. In popular destinations a full arch typically runs into several thousand euros, frequently less than half the equivalent price in high-cost markets, and many patients restore both arches.
A complete quote should cover any needed extractions, the four implants, the immediate temporary bridge, CBCT imaging, and the final bridge with its follow-up. Ask explicitly whether the definitive bridge and a second fitting visit are included, because some quotes price only the surgical phase.
Because integration takes months, the permanent bridge is fitted later, so plan for two trips or a long single stay and budget accordingly for both arches if that is your goal.
Choosing a clinic for full-arch work
Full-arch implant work is demanding surgery and prosthetics combined, so clinician experience is paramount. Look for an implantologist who performs All-on-4 and All-on-6 regularly, an in-house or closely partnered dental laboratory, and recognised facility accreditation such as JCI, TEMOS or ISO. Guided, digitally planned surgery is a strong positive for cases this complex.
Review the plan in detail. A serious clinic builds it from a CBCT scan, explains why four implants suit your bone rather than six, names the implant brand, and specifies the material of both the temporary and final bridge. Ask to understand the timeline for the definitive bridge, not just the surgery day.
Warranty and aftercare are critical for a fixed full arch, because problems are harder to resolve far from the treating clinic. Confirm what is guaranteed, how a screw loosening or chip is handled, and whether a home dentist can maintain the bridge between reviews.
Recovery and timeline
Surgery for All-on-4 is more involved than a single implant and often includes extractions, but it is still done under local anaesthetic with optional sedation and completed in one session per arch. Expect noticeable swelling and bruising for several days and a soft or liquid diet for a few weeks while the implants integrate and the gums settle.
Most patients leave with a fixed temporary bridge, so they have functional, presentable teeth almost immediately. Over the following months the implants fuse with the bone, and you stick to softer foods and careful cleaning to protect them during this critical window.
After three to six months the definitive bridge is fabricated and fitted, typically on a return visit. From surgery to final bridge a case spans several months, after which the arch functions much like natural teeth with diligent daily hygiene.
Risks and what if something goes wrong
The main risks mirror implant surgery in general: infection, nerve injury, sinus complications in the upper jaw, and failure of one or more implants to integrate. Because the whole arch rests on four fixtures, the loss of an implant is more consequential than with single teeth, which is why precise planning and an experienced surgeon matter so much. Mechanical issues such as a chipped tooth or loosened screw can also occur over the years.
These risks are reduced by thorough CBCT planning, honest medical screening, immaculate hygiene during healing and avoiding hard foods early on. Smoking notably increases the chance of failure and should be discussed candidly.
If an implant fails or the bridge is damaged, the treating clinic should repair or replace under warranty, sometimes adding an implant or remaking the bridge. Keep your implant passport and records so any qualified clinic can intervene if you cannot easily return.
Frequently asked
What is the difference between All-on-4 and All-on-6?
All-on-4 supports a full arch on four implants using angled rear placement, while All-on-6 uses six for extra support. The choice depends on your bone volume and jaw, with six often preferred for the softer upper jaw.
Will I leave the clinic with teeth?
In most cases yes. All-on-4 usually allows immediate loading, so a fixed temporary bridge is fitted within a day or two of surgery, and the permanent bridge follows months later.
How much does All-on-4 cost per arch?
It typically runs into several thousand euros per arch in popular destinations, often less than half the price in high-cost markets. The biggest variable is the material of the final bridge, such as acrylic versus zirconia.
Do I need bone grafting for All-on-4?
Often not, because angling the rear implants makes use of existing bone and can avoid grafting or a sinus lift. Patients with severe bone loss may still need grafting or an All-on-6 plan.
How long does recovery take?
Swelling and a soft diet last a few weeks, but full integration of the implants takes three to six months before the final bridge is fitted. Most people resume normal activities within days of surgery.
How long do All-on-4 implants last?
The implants can last many years or decades with good hygiene and check-ups, while the bridge on top may need refurbishment or replacement over time due to wear.
